Wrench.



F. R. A-LLEN.

WRENCH.

APPLIOATION FILED 11m-2o, 1910.

Patented Aug. 15, 1911.

. Fig. 5.

rocosas.

'.ERED R. ALLEN, OF PROVIDENCE, RHODE ISLAND.

WRENCH.

Specification of Letters Patent.

Patented Aug. 15, 1911.

Application led December 20, 1910. Serial No. 598,464.

To all whom i may concern.'

Be it known that I, FRED R. ALLEN, a citizen of the United States, andresident of Providence, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements in Wrenches,of which the following is a specification.

This invention has reference to wrenches, its object being to provide awrench comprising a keeper, a nut engaging member rotatably mounted invsaid keeper, and an operating lever having a cam-shaped portion arrangedto coact with the periphery of said nut engaging member whereby thelatter may be rotated in narrow spaces by short vibrations of said leverwhen desired.

A further object of the invention is to provide a circular groove in thenut engaging member for the reception of the cam end of the operatinglever, whereby said member is retained in said keeper, and to alsoprovide in the operating lever means whereby said nut engaging membermay be readily removed and replaced by one of another size when desired.

With these and other objects in view, the invention consists of certainnovel features of construction, as will be more fully described andparticularly pointed out in the appended claims.

In the accompanying drawings: Figure 1- is a side elevation of myimproved wrench, partially in section. Fig. 2- is a side elevationshowing the operating lever turned down in position to permit the readyremoval of the nut engaging member. Fig. 3- is a central section throughthe keeper showing the nut member retained therein by the end of theoperating lever. Fig. 4 is an edge view of the nut engaging member. Fig.5- is a detail side elevation of the operating lever. Fig. 6- is adetail of the member which controls the movement of the lever withrelation to the keeper.

Referring to the drawings 1 designates the keeper which may beconstructed in any desired shape but is preferably made substantially inthe form of a ring having a protuberance from its edge whichprotuberance is slotted at 2, see Fig. 3, thereby forming a pair of ears3 3 between which the operating handle 4, hereinafter described ismounted on the pivot pin 5. This slot 2 is deep enough, as illustratedin Figs. 1 and 2, to permit the said lever 4 to be turned down on itspivot 5 at substantially right angles to its normal operating positionillustrated in Fig. 2. The nut engaging member'G is preferably made inthe form of a circular disk, its thickness corresponding substantiallywith that of the keeper into which it loosely fits to rotate freely.This member is provided with any suitable means for engaging the nut,bolt head or other device which it is desired to operate. I have, forconvenience, however, shown a hexagonal opening 7 through said memberwhich is adapted to receive the nut or other device to be operated. Theperiphery of this nut engaging member 6 is provided with a comparativelywide annular groove 8 for the reception of the cam end of the operatinglever 4. This lever 4 is provided with a handle 9 of any convenientshape and of a length to provide the desired leverage. The opposite end10 of this lever is made of sufficient length to enter the groove 8 ofthe nut engaging member, said end being formed in a cam shape to engageand coact with the friction periphery 11 at the bottom of the groove 8.@ne edge of this lever adjacent the pivoting pin has a portion cutawayor concaved as at 12 so that when the lever is turned down into theposition illustrated in Fig. 2, said lever end is entirely withdrawnfrom engagement with the groove in the nut engaging member, therebypermitting said member to be freely removed from its keeper to bereplaced with one of another size or style if desired. A retaining screw13, having an enlarged head 14 is threaded into one side of this lever,said head being adapted to enter a recess 15 formed in the end of one ofthe ears 3, said recess being a little larger than said head whereby aslight motion of the lever handle with relation to the retaining memberis permitted. This head 14 has a portion removed or cut away as at 16 sothat when said head is rotated into position to bring this cut awayportion neXt to the ear 3, the

screw head to the groove 15. This turning motion also has the effect ofsetting the screw tighter into the lever, in. which position it isretained by the friction of its shoulder 17, binding against the outerface of said lever.

I claim:

l. A wrench comprising a keeper, a nut engaging member rotatably mountedin said keeper, said member having an annular groove, a friction surfaceat the bottom of said groove, an operating lever having a cam-shapedportion entering said groove to coact with said friction surface andalso to retain said member in operativeposition within the keeper.

2. A wrench comprising a keeper, a nut engaging member rotatably mountedin said keeper, said member having a friction periphery, an operatinglever having a camshaped portion to coact with said friction periphery,and means whereby said member may be readily locked in said keeper.

3. A wrench comprising a keeper, a nut engaging member rotatably mountedin said keeper, said member having a friction periphery and an operatinglever having a cam-shaped portion to coact with said friction periphery,said member being retained in operative position within saidkeeper bythe groove engaging end of said lever.

4. A wrench comprising a keeper, a nut engaging member rotatably mountedin said keeper, said member having a friction periphery and an operatinglever having a cam-shaped portion to coact with said friction periphery,said member being retained in operative position within said keeper bysaid lever, and means whereby said lever may be readily thrown out ofengagement with said member to permit its ready removal. y

5. A wrench comprising a keeper, a nut engaging member rotatably mountedin said engaging member rotatablyvmounted in said Y l j keeper, saidmember having an annular groove, a friction surface at the bottomgofsaid groove, an operating lever pivotallyv mounted in said keeper andhaving a camshaped portion entering said groove to eoact with saidfriction surface and also to retain said member in operative positionwithin the keeper, means for loosely retaining said lever in itsoperative position with relation to said keeper, and means whereby saidlever may be readily thrown out of engagement with said member to permitthe ready removal of the latter.

In testimony whereof I affix my signature in presence of two witnesses.

FRED R. ALLEN.

Witnesses:

HOWARD E. BAnLow, E. I. OGDEN.

Copies yof this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

